Write the word according to the meaning of the sentence. 1. Children like to take part in all kinds of a__________ after class. 2. I b__________ you can make it as long as you work hard enough. 3. Good hobbies can d__________ our interests. 4. I'm so shy a girl that I'm afraid to speak to f__________. 5. — He looks upset. What has h__________ to him? —He lost his Hongbao, which contained 1000 yuan lucky money. 6. Don't open that envelope. It's a p__________ letter.